This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A087027 #16 Aug 06 2014 17:14:12 %S A087027 0,1,2,3,4,5,6,7,8,10,110,111,112,113,114,115,116,117,118,120,210,221, %T A087027 222,223,224,225,226,227,228,230,310,321,332,333,334,335,336,337,338, %U A087027 340,410,421,432,443,444,445,446,447,448,450,510,521,532,543,554,555,556,557,558 %N A087027 a(n) = n*m where * is lunar multiplication and m is the ordinary sum n+1. %H A087027 D. Applegate, <a href="/A087061/a087061.txt">C program for lunar arithmetic and number theory</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing] %H A087027 D. Applegate, M. LeBrun and N. J. A. Sloane, <a href="http://arxiv.org/abs/1107.1130">Dismal Arithmetic</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing] %H A087027 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %Y A087027 Cf. A087019. %K A087027 nonn,base %O A087027 0,3 %A A087027 Marc LeBrun and _N. J. A. Sloane_, Oct 19 2003